[Elecraft] KX3 Questions

James Bennett w6jhb at me.com
Sat Nov 1 10:58:45 EDT 2014


Another option for a tad more power is to "roll you own". W6PQL had an article in the May 2013 issue of QST for building an 80 watt out all mode 2 meter amp:

http://www.w6pql.com/2_meter_80w_all_mode_amplifier.htm

He has a ton of other home brew projects on his web site. I built that amp this past spring and it works great. I made my own cabinet, but bought the board from him. The parts were obtained through various online retailers. It works great - I've used mine, driven by 5 watts from my K3, on CW, SSB, and FM.

Just a thought.....

73, Jim / W6JHB
KX3# 5539, K3# 4359

On   Saturday, Nov 1, 2014, at  Saturday, 7:49 AM, Dale Parfitt <parinc1 at frontier.com> wrote:

> One could always buy a Mitsubishi brick and put  it in a case. RF parts or eBay:
> eBay item number:121444258503
> 
> $45 for a 30W out module fully assembled. Or $58 for 60W out. 50mW drive. Add an LPF, bypass switching  and you are done.
> Normally set up for FM, they can be run linear by adjusting the gate voltage.
> Dale W4OP
> 
> ----- Original Message ----- From: "Phil Hystad" <phystad at mac.com>
> To: <jim at audiosystemsgroup.com>
> Cc: <elecraft at mailman.qth.net>
> Sent: Saturday, November 01, 2014 9:56 AM
> Subject: Re: [Elecraft] KX3 Questions
> 
> 
>> Jim -- Definitely agree on the need for an amp with KX3 2-meter.  I have posted, more than once, my Elecraft wish list item of a nice 2-meter amp. It just seems like something that would be easy for them to throw together.  Otherwise, there are a few 2-meter amps I have been looking at but so far I have not needed one (mostly since my home brew 2-meter yagi is not anywhere near done yet).
>> 
>> 73, phil, K7PEH
>> 
>>> On Oct 31, 2014, at 11:06 PM, Jim Brown <jim at audiosystemsgroup.com> wrote:
>>> 
>>> On 10/31/2014 9:19 AM, Phil Hystad wrote:
>>>> But, if you are wanting to do weak signal work with CW, SSB, etc. then the 2M option is a very good cost item and worth the small increment of $.
>>> 
>>> Yes, IF you can find a good amp that drives with the 3W or so that the 2M transverter produces. There was an '80s vintage Mirage 2W In, 150W out brick that did that, and I have one (but there's no way I'd sell it). :)
>>> 
>>> 73, Jim K9YC
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